Hydraulics and Fluid Mechanics in ME
According to Manning's formula, the discharge through an open channel is (where M = Manning's constant)

A2/3 × M1/3 × m × i
A × M × m2/3 × i1/2
A × M × m1/2 × i2/3
A1/2 × M2/3 × m × i

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Hydraulics and Fluid Mechanics in ME
The conditions for the stable equilibrium of a floating body are

the center of buoyancy and the center of gravity must lie on the same vertical line
a righting couple should be formed
all the above are correct
the meta-center should lie above the center of gravity

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